Sorter for paper-pulp and the like.



J. M. L. SPANGENBERG. SORTER FOB. PAPER PULP AND THE LIKE.

APPLICATION FILED MAR. 20, 1912.

Patented Oct. 29, 1912.

INVENTOR;

gm M wfwam hdjl l ll l JOHN MAGNUS LAESSGN SPANGENBEEG, 03F FORSHAGA, SWEDEN.

SQRTEI-Et FOE PAPEPTPULP AND THE LIKE Specification of Letters Patent.

Patented @ct. 29,1912.

Application filed March 26, 1912. Serial 310,685,127.

Sorters for Paper-Pulp and the Like.

The present invention relates to such sorters for paper pulp and the like which consists of a cylinder rotatably arranged in a receptacle, the sidewalls of said cylinder consisting of a perforated mantle through which the fibers pass from without inward, and the interior of which is in com iunicm tion with a suction or exhaust pipe, and which sorters are provided with iembers movable within the said cylinder serving to cause a flow of liquid through the mantle in the direction from within to witnout at the places where the said members pass in order by this change in the direction of flow of the current to prevent the'holes in the mantle or casing being clogged by fibers and the like. In previously known devices for this purpose the said members arranged within the cylinder have been constructed to have an oscillating motion, e, a backward and forward motion. In accordance with the present invention, on the contrary the said change in the direction of the current is produced by suitable members as shovels, blades or the like arranged within'the 3}-lildl which do not oscillate but rotate cont-imr ously, whereby'a better effect is produced, while at the same time the device for driv ing the said members will be considerably simpler and cheaper than if the members in question were made to oscillate.

In the accompanying drawing is illustrated by way of example form of struction of the invention.

Figure 1 is a longitudinal section of the apparatus, and Fig. 2 shows the samein cross section along the dotted line in Fig. 1.

The sorter consists of a straining drum l rotating in the well known manner in a receptacle 3 provided with an inlet opening 1 for the material to be treated consisting of pulp suspended in water, and a suction exit 2. The circumference of said drum a consists of a casing ormantle of perforated plate or metal wire tissue. Within the said drum 4 are arranged the above-mentioned members for producing changes in the direction of current,which members, according to the form of construction shown in the drawing, consist of longitudinal blades or vanes 7, carried by radial arms 8, mounted on a 1'0- tatable shaft 9. The shaft 9 can be arranged concentrically with the shaft of the drum 4-; but according to the form of construction illustrated in the drawing it is arranged excentrically in relation to the axis of the drum, in order to provide a space between the rotating vanes 7 and the casing of the v drum 4 atthe top part of the same for a spurt pipe 10 arranged within the drum, which pipe 10 at its upper side facing the casing of the drum is provided with a number of apertures "or perforations, so that. when water is supplied to the said pipe 10 through the inlet ll, the water spurts out in a fine spray against the perforated mantle of the drum, whereby the perforations in said mantle are free from fibers and the like fastened in it. The drum l is at one of its ends provided with a hollow axle-journal 12, which axle-journal 12 passes through the end of the receptacle 3 and is rotatably carried by bearings in order to bring about a tight titbetween the said shaft and the end wall of the receptacle 3, packing devices ll of some suitable construction are provided. litthe opposite end of the p1olonged part 14 the drum at rotatably carried by wooden blocks 16 or the like arranged. in the receptacle 3. The shaft passes through the hollow axle-journal 12' roiatably carried at thisend by a opposite end said shaft lvaring l8. For driving shaft 9 and the or shovels 7 carthe med by it, there is arranged at one end of .1 shaft 9 a belt onlley '19, which is set in ro ation in the usual manner by means of a belt (not shown). The drum d is also driven from the said shaft by means of a toothed wheel mounted on the s aft 9, which toothed wheel 20 engages with a toothed wheel 21, mounted on one end of a rotatable shaft 22, on the other end of which shaft 22 there is a toothed wheel 23. engaging with'a toothed wheel 24- mounted on the axlejournal 12 of the drum. The gearing is arranged in such a manner that the shaft 9 rotates at. a comparatively great speed, c. g. 80 revolutions per minute, while the drum 4 rotates comparatively slowly, c. g. 4 revolutions per minute.

In order to bring about a tight fit of the outer end of the hollow axle-journal 1.2 there is a ringshaped disk 25 tightly mount- 

